修改全局按钮背景阴影，生成二维码和撤销接口调用

app/src/main/res/layout/activity_login.xml

@@ -164,6 +164,8 @@
             android:background="@drawable/rounded_blue_bg"
             android:paddingHorizontal="12dp"
             android:maxWidth="120dp"
+            android:elevation="0dp"
+            android:stateListAnimator="@null"
             app:layout_constraintTop_toTopOf="parent"
             app:layout_constraintBottom_toBottomOf="parent"
             app:layout_constraintEnd_toEndOf="parent"
@@ -223,6 +225,8 @@
         android:layout_marginTop="40dp"
         android:text="@string/login"
         android:textSize="18sp"
+        android:elevation="0dp"
+        android:stateListAnimator="@null"
         android:background="@drawable/rounded_blue_bg"
         android:textColor="@color/white"
         app:layout_constraintTop_toBottomOf="@+id/smsRowLayout"